Title of article
Investigation of FEAs applied in vacuum electron gun
Author/Authors
Xinghui Li، نويسنده , , Chongfeng Yang، نويسنده , , Guodong Bai، نويسنده , , Fuquan Zhang، نويسنده , , Fujiang Liao، نويسنده , , Jinjun Feng، نويسنده , , Mingqing Ding، نويسنده , , Yinghua Du، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
4
From page
249
To page
252
Abstract
Our recent research has shown that the main technical difficulties employing field emission arrays (FEAs) in electron guns of microwave power amplifiers could be attributed to the FEAs’ insufficient emission current density, emission stability, and the defocusing of the electron beams. The investigation of these parameters and measures for performance improvement are described in this paper. The conditions for obtaining a current density of several A/cm2 and a stable working point are studied and realized. An electron gun with the FEAs for traveling wave tubes (TWTs) was designed and simulated, which allows focusing of a 100 mA electron beam with a 30° divergence angle.
Keywords
Field emission array (FEA) , Electron gun , Microwave power amplifier
Journal title
Applied Surface Science
Serial Year
2003
Journal title
Applied Surface Science
Record number
998586
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